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76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sts=4 et sw=4 tw=99:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef jscrashformat_h
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#define jscrashformat_h
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namespace js {
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namespace crash {
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static const int crash_cookie_len = 16;
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static const char crash_cookie[crash_cookie_len] = "*J*S*CRASHDATA*";
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/* These values are used for CrashHeader::id. */
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enum {
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JS_CRASH_STACK_GC = 0x400,
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JS_CRASH_STACK_ERROR = 0x401,
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JS_CRASH_RING = 0x800
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};
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/*
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* All the data here will be stored directly in the minidump, so we use
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* platform-independent types. We also ensure that the size of every field is a
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* multiple of 8 bytes, to guarantee that they won't be padded.
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*/
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struct CrashHeader
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{
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char cookie[crash_cookie_len];
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/* id of the crash data, chosen from the enum above. */
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uint64_t id;
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CrashHeader(uint64_t id) : id(id) { memcpy(cookie, crash_cookie, crash_cookie_len); }
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};
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struct CrashRegisters
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{
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uint64_t ip, sp, bp;
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};
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static const int crash_buffer_size = 32 * 1024;
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struct CrashStack
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{
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CrashStack(uint64_t id) : header(id) {}
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CrashHeader header;
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uint64_t snaptime; /* Unix time when the stack was snapshotted. */
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CrashRegisters regs; /* Register contents for the snapshot. */
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uint64_t stack_base; /* Base address of stack at the time of snapshot. */
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uint64_t stack_len; /* Extent of the stack. */
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char stack[crash_buffer_size]; /* Contents of the stack. */
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};
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struct CrashRing
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{
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CrashRing(uint64_t id) : header(id), offset(0) { memset(buffer, 0, sizeof(buffer)); }
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CrashHeader header;
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uint64_t offset; /* Next byte to be written in the buffer. */
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char buffer[crash_buffer_size];
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};
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/* These are the tag values for each entry in the CrashRing. */
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enum {
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JS_CRASH_TAG_GC = 0x200
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};
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} /* namespace crash */
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} /* namespace js */
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#endif /* jscrashformat_h */
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